feat: add blobHash property type support (Weaviate 1.37.0+)#336
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mpartipilo merged 3 commits intomainfrom May 5, 2026
Merged
feat: add blobHash property type support (Weaviate 1.37.0+)#336mpartipilo merged 3 commits intomainfrom
mpartipilo merged 3 commits intomainfrom
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Introduces DataType.BlobHash, BlobHashPropertyConverter, and PropertyBag.GetBlobHash() to support the new blobHash schema type that stores a SHA-256 hash of the blob instead of the blob data itself, reducing disk footprint for multimodal workloads. Closes #323 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Weaviate.Client.VectorData - 50.3%
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I would potentially add at least one integration test just as a sanity check. I know it's not the job of the client to test server functionality but it could still come in handy to catch various issues. |
g-despot
approved these changes
May 5, 2026
Verifies that DataType.BlobHash is correctly serialized in the collection creation request and deserialized back from the schema API. Full insert tests require a multimodal vectorizer (e.g. multi2vec-clip) which is not available in the standard CI environment. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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@g-despot Done — added Full insert/retrieval tests would require a multimodal vectorizer (like |
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
DataType.BlobHashenum value (wire:"blobHash") andProperty.BlobHashstatic factoryBlobHashPropertyConverter— string passthrough, no array support, not registered by C# type to avoid shadowingTextPropertyConverterPropertyBag.GetBlobHash(string name) -> string?for reading the stored SHA-256 hex hashBackground
blobHash(introduced in Weaviate 1.37.0) accepts a base64-encoded blob on write, but the server computes a SHA-256 hash server-side after vectorization and stores only the 64-char hex digest. This reduces disk footprint for multimodal workloads where you want to track blob identity without storing the full payload.Wire format: both
blobandblobHashshare theblob_valuefield in the gRPC proto — on write the client sends base64, on read the server returns the SHA-256 hex string.Closes #323
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